import pytest


class TestClass:
    a = "123"

    @classmethod
    def setup_class(cls):
        cls.a = "abc"

    @pytest.mark.parametrize("alpha", ["a", "b", "c"])
    def test_add(self, alpha):
        print(TestClass.a, "********")
        assert TestClass.a == "abc"
        alpha += TestClass.a
        print(alpha)


if __name__ == '__main__':
    tc = TestClass()
    tc.test_add()
